1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2021 Intel Corporation 4 */ 5 6 #include "xe_module.h" 7 8 #include <linux/init.h> 9 #include <linux/module.h> 10 11 #include <drm/drm_module.h> 12 13 #include "xe_defaults.h" 14 #include "xe_device_types.h" 15 #include "xe_drv.h" 16 #include "xe_configfs.h" 17 #include "xe_hw_fence.h" 18 #include "xe_pci.h" 19 #include "xe_pm.h" 20 #include "xe_observation.h" 21 #include "xe_sched_job.h" 22 23 struct xe_modparam xe_modparam = { 24 .probe_display = XE_DEFAULT_PROBE_DISPLAY, 25 .guc_log_level = XE_DEFAULT_GUC_LOG_LEVEL, 26 .force_probe = XE_DEFAULT_FORCE_PROBE, 27 #ifdef CONFIG_PCI_IOV 28 .max_vfs = XE_DEFAULT_MAX_VFS, 29 #endif 30 .wedged_mode = XE_DEFAULT_WEDGED_MODE, 31 .svm_notifier_size = XE_DEFAULT_SVM_NOTIFIER_SIZE, 32 /* the rest are 0 by default */ 33 }; 34 35 module_param_named(svm_notifier_size, xe_modparam.svm_notifier_size, uint, 0600); 36 MODULE_PARM_DESC(svm_notifier_size, "Set the svm notifier size in MiB, must be power of 2 " 37 "[default=" __stringify(XE_DEFAULT_SVM_NOTIFIER_SIZE) "]"); 38 39 module_param_named_unsafe(force_execlist, xe_modparam.force_execlist, bool, 0444); 40 MODULE_PARM_DESC(force_execlist, "Force Execlist submission"); 41 42 module_param_named(probe_display, xe_modparam.probe_display, bool, 0444); 43 MODULE_PARM_DESC(probe_display, "Probe display HW, otherwise it's left untouched " 44 "[default=" __stringify(XE_DEFAULT_PROBE_DISPLAY) "])"); 45 46 module_param_named(vram_bar_size, xe_modparam.force_vram_bar_size, int, 0600); 47 MODULE_PARM_DESC(vram_bar_size, "Set the vram bar size in MiB (<0=disable-resize, 0=max-needed-size, >0=force-size " 48 "[default=" __stringify(XE_DEFAULT_VRAM_BAR_SIZE) "])"); 49 50 module_param_named(guc_log_level, xe_modparam.guc_log_level, int, 0600); 51 MODULE_PARM_DESC(guc_log_level, "GuC firmware logging level (0=disable, 1=normal, 2..5=verbose-levels " 52 "[default=" __stringify(XE_DEFAULT_GUC_LOG_LEVEL) "])"); 53 54 module_param_named_unsafe(guc_firmware_path, xe_modparam.guc_firmware_path, charp, 0400); 55 MODULE_PARM_DESC(guc_firmware_path, 56 "GuC firmware path to use instead of the default one"); 57 58 module_param_named_unsafe(huc_firmware_path, xe_modparam.huc_firmware_path, charp, 0400); 59 MODULE_PARM_DESC(huc_firmware_path, 60 "HuC firmware path to use instead of the default one - empty string disables"); 61 62 module_param_named_unsafe(gsc_firmware_path, xe_modparam.gsc_firmware_path, charp, 0400); 63 MODULE_PARM_DESC(gsc_firmware_path, 64 "GSC firmware path to use instead of the default one - empty string disables"); 65 66 module_param_named_unsafe(force_probe, xe_modparam.force_probe, charp, 0400); 67 MODULE_PARM_DESC(force_probe, 68 "Force probe options for specified devices. See CONFIG_DRM_XE_FORCE_PROBE for details " 69 "[default=" XE_DEFAULT_FORCE_PROBE "])"); 70 71 #ifdef CONFIG_PCI_IOV 72 module_param_named(max_vfs, xe_modparam.max_vfs, uint, 0400); 73 MODULE_PARM_DESC(max_vfs, 74 "Limit number of Virtual Functions (VFs) that could be managed. " 75 "(0=no VFs; N=allow up to N VFs " 76 "[default=" XE_DEFAULT_MAX_VFS_STR "])"); 77 #endif 78 79 module_param_named_unsafe(wedged_mode, xe_modparam.wedged_mode, uint, 0600); 80 MODULE_PARM_DESC(wedged_mode, 81 "Module's default policy for the wedged mode (0=never, 1=upon-critical-error, 2=upon-any-hang-no-reset " 82 "[default=" XE_DEFAULT_WEDGED_MODE_STR "])"); 83 84 static int xe_check_nomodeset(void) 85 { 86 if (drm_firmware_drivers_only()) 87 return -ENODEV; 88 89 return 0; 90 } 91 92 struct init_funcs { 93 int (*init)(void); 94 void (*exit)(void); 95 }; 96 97 static const struct init_funcs init_funcs[] = { 98 { 99 .init = xe_check_nomodeset, 100 }, 101 { 102 .init = xe_configfs_init, 103 .exit = xe_configfs_exit, 104 }, 105 { 106 .init = xe_hw_fence_module_init, 107 .exit = xe_hw_fence_module_exit, 108 }, 109 { 110 .init = xe_sched_job_module_init, 111 .exit = xe_sched_job_module_exit, 112 }, 113 { 114 .init = xe_register_pci_driver, 115 .exit = xe_unregister_pci_driver, 116 }, 117 { 118 .init = xe_observation_sysctl_register, 119 .exit = xe_observation_sysctl_unregister, 120 }, 121 { 122 .init = xe_pm_module_init, 123 }, 124 }; 125 126 static int __init xe_call_init_func(const struct init_funcs *func) 127 { 128 if (func->init) 129 return func->init(); 130 return 0; 131 } 132 133 static void xe_call_exit_func(const struct init_funcs *func) 134 { 135 if (func->exit) 136 func->exit(); 137 } 138 139 static int __init xe_init(void) 140 { 141 int err, i; 142 143 for (i = 0; i < ARRAY_SIZE(init_funcs); i++) { 144 err = xe_call_init_func(init_funcs + i); 145 if (err) { 146 pr_info("%s: module_init aborted at %ps %pe\n", 147 DRIVER_NAME, init_funcs[i].init, ERR_PTR(err)); 148 while (i--) 149 xe_call_exit_func(init_funcs + i); 150 return err; 151 } 152 } 153 154 return 0; 155 } 156 157 static void __exit xe_exit(void) 158 { 159 int i; 160 161 for (i = ARRAY_SIZE(init_funcs) - 1; i >= 0; i--) 162 xe_call_exit_func(init_funcs + i); 163 } 164 165 module_init(xe_init); 166 module_exit(xe_exit); 167 168 MODULE_AUTHOR("Intel Corporation"); 169 170 MODULE_DESCRIPTION(DRIVER_DESC); 171 MODULE_LICENSE("GPL and additional rights"); 172